Coil lead connecting structure and wireless charger

Abstract

The utility model relates to a coil lead connection structure and wireless charger wherein the coil lead connection structure comprises a coil, a PCBA and a connection terminal, the coil is connected with a lead, the lead is pressed on the connection terminal, the PCBA is provided with a bonding pad hole, the connection terminal is used for clamping with the bonding pad hole, and the connection terminal is connected with the PCBA. The connecting terminal is provided with a first clamping piece and a second clamping piece, the first clamping piece can abut against the PCBA, and the second clamping piece can penetrate through the bonding pad hole and is connected with the PCBA in a clamping mode. The utility model has the beneficial effects that the coil can be quickly fixed, the production efficiency is improved, and the coil lead welding quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless charger coil and PCBA connection, and in particular to a coil lead connection structure and a wireless charger. Background Art

[0002] The coil lead of the wireless charger needs to be welded to the pad of the PCBA to ensure good conductivity between the PCBA and the coil. For good coil welding, the coil lead needs to be fixed with a fixture, and the operator needs to place the coil lead in the center of the pad. Figure 6 The figure is a simple schematic diagram of the coil lead fixing in one of the prior arts. If the coil fixture 9 is clamped too tightly, the operator needs to spend more time to adjust the position of the coil lead 11, resulting in low production efficiency; if the coil fixture 9 is not clamped tightly, the coil lead 11 is elastic and cannot be effectively fixed on the soldering pad 10 of the PCBA, affecting the welding quality. Utility Model Content

[0003] The utility model aims to provide a coil lead connection structure and a wireless charger which can quickly fix the coil, improve production efficiency and improve the welding quality of the coil lead.

[0004] A coil lead connection structure comprises a coil, a PCBA and a connecting terminal, wherein the coil is connected to a lead, the lead is pressed on the connecting terminal, a soldering pad hole is provided on the PCBA, the connecting terminal is used to be snapped with the soldering pad hole, a first locking piece and a second locking piece are provided on the connecting terminal, the first locking piece can abut against the PCBA, and the second locking piece can pass through the soldering pad hole and be snapped with the PCBA.

[0005] In the above scheme, when the leads of the coil are welded to the PCBA, the leads of the coil pass through the connecting terminal and the connecting terminal is pressed and buckled, and then the connecting terminal is passed through the pad hole on the PCBA, so that the leads can be quickly and smoothly inserted into the pad hole of the PCBA, thereby ensuring production efficiency. The second locking piece passes through the pad hole and is engaged with the PCBA so that the connecting terminal will not fall out of the pad hole. The first locking piece abuts against the PCBA to ensure that the insertion depth of each connecting terminal is uniform, thereby limiting the reserved length of the coil leads and improving the consistency of welding. The connecting terminal effectively fixes the leads of the coil on the PCBA, thereby improving the quality of welding.

[0006] Furthermore, the connecting terminal includes a main body and a limiting portion, a notch is formed between the limiting portion and the main body, and a first through hole and a second through hole are respectively formed on the limiting portion and the main body.

[0007] In the above scheme, the lead wire passes through the first through hole of the limiting part and passes through the second through hole of the main body. The pressing limiting part can ensure the stability of the lead wire. The main body passes through the pad hole on the PCBA so that the connecting terminal is stably connected to the PCBA. Welding is performed at the notch position formed between the limiting part and the main body so that the lead wire can be welded and connected to the PCBA.

[0008] Furthermore, the cross-sections of the main body and the limiting portion are in a circular ring shape.

[0009] In the above scheme, the main body and the limiting part are cylindrical as a whole. Since the main body and the limiting part are respectively provided with a first cylindrical through hole and a second cylindrical through hole, the cross-section of the main body and the limiting part is in a circular ring shape, which can ensure that the lead wire of the coil can be quickly inserted into the connecting terminal, and can also ensure that the connecting terminal can be quickly inserted into the solder pad hole of the PCBA.

[0010] Furthermore, one end of the limiting portion is formed as a movable structure, and the limiting portion includes a first connecting ring and a second connecting ring which are slidably connected, and an outer wall of the first connecting ring is in contact with an inner wall of the second connecting ring.

[0011] In the above scheme, since the outer wall of one end of the first connecting ring contacts the inner wall of one end of the second connecting ring, the first connecting ring and the second connecting ring are slidably connected, so that one end of the limiting portion is formed into a movable structure. After the lead wire is passed through the limiting portion and the main body, the limiting portion is pressed to make the first connecting ring and the second connecting ring slide relative to each other to reduce the size of the first through hole, thereby tightening the lead wire of the coil and ensuring the stability of the coil lead wire during welding.

[0012] Furthermore, a connecting piece is provided on the main body, and the connecting piece is connected to the limiting portion.

[0013] In the above scheme, the limiting part is connected to the main body through a connecting piece, and the connecting piece can be integrally formed with the limiting part, or can be detachably connected, so that the main body and the limiting part of the connecting terminal become a whole for easy storage and use, and can also ensure a stable buckle coil of the connecting terminal.

[0014] Furthermore, the other end of the main body away from the limiting portion is a tail end, the main body is provided with a plurality of grooves near the tail end, the second locking piece is elastically connected to the grooves, and the second locking piece forms an angle with the main body.

[0015] In the above scheme, the second locking piece forms an angle with the main body, and the second locking piece is elastically connected to the groove on the main body, so that the second locking piece can be embedded in the groove when squeezed, so that the main body can smoothly pass through the pad hole on the PCBA. After passing through the pad hole, the second locking piece and the main body return to a state with an angle, thereby realizing the locking connection between the second locking piece and the PCBA.

[0016] Furthermore, the second locking piece includes a connecting end and a free end, the connecting end is elastically connected to one end of the groove, the connecting end is close to the tail end, and the free end can move back and forth with the connecting end as the axis.

[0017] In the above scheme, the connecting end is elastically connected to one end of the groove, and the connecting end is close to the tail end, so that when the main body is inserted into the pad hole, the connecting end can pass through the pad hole smoothly, and then the second fixing piece is squeezed, so that the free end of the second fixing piece can move toward the main body with the connecting end as the axis until the second fixing piece is completely embedded in the groove. After the free end passes through the pad hole, the free end moves and resets in the direction away from the main body with the connecting end as the axis under the action of elasticity, so that the second fixing piece can be connected to the PCBA.

[0018] Furthermore, one end of the first locking piece connected to the limiting portion is arc-shaped.

[0019] In the above solution, the arc-shaped end of the first locking piece can fit with the limiting portion, so that the whole is more beautiful and the structure is more stable.

[0020] Furthermore, the pad hole has a circular cross-section, and the main body can pass through the pad hole.

[0021] In the above solution, the cross-section of the pad hole is circular, which is convenient for processing, and the main body can also pass through the pad hole more smoothly, thereby improving the overall production efficiency.

[0022] A wireless charger comprises a coil lead connection structure as described in any one of the above solutions.

[0023] The utility model discloses a coil lead connection structure and a wireless charger, which can quickly fix the coil, improve production efficiency and improve the welding quality of the coil lead. When welding the coil lead and PCBA, the coil lead passes through the connection terminal and presses the connection terminal, and then passes the connection terminal through the pad hole on the PCBA, so that the lead can be quickly and smoothly inserted into the pad hole of the PCBA, ensuring production efficiency. The second fixing piece passes through the pad hole and is connected to the PCBA so that the connection terminal will not fall out of the pad hole. The first fixing piece abuts against the PCBA to ensure that the insertion depth of each connection terminal is uniform, so that the reserved length of the coil lead can be limited, and the consistency of welding is improved. The connection terminal effectively fixes the coil lead on the PCBA, thereby improving the quality of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the coil lead connection structure of Example 1.

[0025] Figure 2 This is a schematic diagram of the connecting terminal structure in Example 1.

[0026] Figure 3 This is a schematic diagram of the connection terminal and PCBA plug-in in Example 1.

[0027] Figure 4 for Figure 3 A partial enlarged view of the .

[0028] Figure 5 This is a schematic diagram of the connecting terminal structure in Example 2.

[0029] Figure 6 This is a schematic diagram of the coil lead being fixed by a fixture in the prior art.

[0030] Explanation of the accompanying drawings: 1. Coil; 2. Lead; 3. PCBA; 4. Pad hole; 5. Connecting terminal; 51. Limiting portion; 511. First through hole; 52. Main body; 521. Second through hole; 522. Connecting piece; 523. Groove; 6. First fixing piece; 7. Second fixing piece; 71. Connecting end; 72. Free end; 8. Notch; 501. First connecting ring; 502. Second connecting ring. DETAILED DESCRIPTION

[0031] The coil lead connection structure and the wireless charger of the present invention will be further described in detail below in conjunction with specific embodiments and drawings. Example 1

[0032] like Figures 1 to 4As shown, in this embodiment, the coil lead connection structure of the utility model includes a coil 1, a PCBA3 and a connecting terminal 5, the coil 1 is connected to a lead 2, the lead 2 is pressed on the connecting terminal 5, the PCBA3 is provided with a soldering pad hole 4, the connecting terminal 5 is used to be clamped with the soldering pad hole 4, and the connecting terminal 5 is provided with a first clamping piece 6 and a second clamping piece 7, the first clamping piece 6 can be abutted against the PCBA3, and the second clamping piece 7 can pass through the soldering pad hole 4 and be clamped with the PCBA3. When welding the lead 2 of the coil 1 and PCBA3, the lead 2 of the coil 1 passes through the connecting terminal 5 and is pressed and buckled, and then the connecting terminal 5 is passed through the soldering pad hole 4 on the PCBA3, so that the lead 2 can be quickly and smoothly inserted into the soldering pad hole 4 of the PCBA3, thereby ensuring production efficiency. The second fixing piece 7 passes through the soldering pad hole 4 and is clamped with the PCBA3 so that the connecting terminal 5 will not be separated from the soldering pad hole 4. The first fixing piece 6 abuts against the PCBA3 to ensure that the insertion depth of each connecting terminal 5 is uniform, thereby limiting the reserved length of the coil lead and improving the consistency of welding. The connecting terminal 5 effectively fixes the lead 2 of the coil 1 on the PCBA3, thereby improving the quality of welding.

[0033] like Figures 1 to 4 As shown, in this embodiment, the connection terminal 5 includes a main body 52 and a limiting part 51, a notch 8 is formed between the limiting part 51 and the main body 52, and a first through hole 511 and a second through hole 521 are respectively formed on the limiting part 51 and the main body 52. ​​The lead 2 passes through the first through hole 511 of the limiting part 51 and is penetrated through the second through hole 521 of the main body 52. ​​Pressing the limiting part 51 can ensure the stability of the lead 2. The main body 52 passes through the pad hole 4 on the PCBA 3 so that the connection terminal 5 is stably connected to the PCBA 3. Welding is performed at the notch 8 formed between the limiting part 51 and the main body 52, so that the lead 2 can be welded and connected to the PCBA 3, thereby ensuring the consistency of welding.

[0034] like Figure 1 and Figure 2 As shown, in this embodiment, the cross-section of the main body 52 and the limiting part 51 is annular. The main body 52 and the limiting part 51 are cylindrical as a whole. Since the main body 52 and the limiting part 51 are respectively provided with a cylindrical first through hole 511 and a second through hole 521, the cross-section of the main body 52 and the limiting part 51 is annular, which can ensure that the lead wire 2 of the coil 1 can be quickly inserted into the connecting terminal 5, and can also ensure that the connecting terminal 5 can be quickly inserted into the pad hole 4 of the PCBA 3, simplifying the operation and thus improving the production efficiency.

[0035] like Figure 2As shown, in this embodiment, the limiting portion 51 is a closed cylinder, and a cylindrical first through hole 511 is opened in the limiting portion 51 in the cylindrical shape. After the lead wire 2 of the coil 1 is inserted into the limiting portion 51 and the main body 52, the coil lead wire can be fixed by flattening the limiting portion 51.

[0036] like Figure 1 and Figure 2 As shown, in this embodiment, a connecting piece 522 is provided on the main body 52, and the connecting piece 522 is connected to the limiting part 51. The limiting part 51 is connected to the main body 52 through the connecting piece 522, and the connecting piece 522 can be integrally formed with the limiting part 51, or can be detachably connected, so that the main body 52 and the limiting part 51 of the connecting terminal 5 become a whole, which is convenient for storage and use, and can also ensure that the connecting terminal 5 is stably pressed against the coil 1.

[0037] like Figure 1 and Figure 2 As shown, in this embodiment, the other end of the main body 52 away from the limiting portion 51 is the tail end, and the main body 52 is provided with a plurality of grooves 523 near the tail end, and the second fixing piece 7 is elastically connected to the grooves 523, and the second fixing piece 7 forms an angle with the main body 52. ​​The second fixing piece 7 forms an angle with the main body 52, and the second fixing piece 7 is elastically connected to the grooves 523 on the main body 52, so that the second fixing piece 7 can be embedded in the grooves 523 when squeezed, so that the main body 52 can smoothly pass through the pad hole 4 on the PCBA3, and after passing through the pad hole 4, the second fixing piece 7 and the main body 52 are restored to the state of having an angle, thereby realizing the clamping connection between the second fixing piece 7 and the PCBA3.

[0038] like Figures 2 to 4 As shown, in this embodiment, the second fixing piece 7 includes a connecting end 71 and a free end 72, the connecting end 71 is elastically connected to one end of the groove 523, the connecting end 71 is close to the tail end, and the free end 72 can move back and forth with the connecting end 71 as the axis. The connecting end 71 is elastically connected to one end of the groove 523, and the connecting end 71 is close to the tail end, so that when the main body 52 is inserted into the pad hole 4, the connecting end 71 can smoothly pass through the pad hole 4, and then the second fixing piece 7 is squeezed, so that the free end 72 of the second fixing piece 7 can move toward the main body 52 with the connecting end 71 as the axis until the second fixing piece 7 is completely embedded in the groove 523, and after the free end 72 passes through the pad hole 4, the free end 72 moves and resets with the connecting end 71 as the axis in the direction away from the main body 52 under the action of elasticity, so that the second fixing piece 7 can be connected with the PCBA3.

[0039] like Figure 2As shown, in this embodiment, one end of the first fixing piece 6 connected to the limiting portion 51 is arc-shaped. The arc-shaped end of the first fixing piece 6 can fit with the limiting portion 51, so that the whole is more beautiful and the structure is more stable.

[0040] like Figure 1 As shown, in this embodiment, the pad hole 4 has a circular cross section, and the main body 52 can pass through the pad hole 4. The pad hole 4 has a circular cross section for easy processing, and the main body 52 can also pass through the pad hole 4 more smoothly, thereby improving the overall production efficiency. Example 2

[0041] The structure and principle of this embodiment are basically the same as those of the embodiment 1, except that one end of the limiting portion 51 is formed into a movable structure, and the limiting portion 51 includes a first connecting ring 501 and a second connecting ring 502 that are slidably connected, and the outer wall of the first connecting ring 501 contacts the inner wall of the second connecting ring 502. Since the outer wall of one end of the first connecting ring 501 contacts the inner wall of one end of the second connecting ring 502, the first connecting ring 501 and the second connecting ring 502 are slidably connected, so that one end of the limiting portion 51 is formed into a movable structure, and after the lead wire 2 is inserted into the limiting portion 51 and the main body 52, the limiting portion 51 is pressed to make the first connecting ring 501 and the second connecting ring 502 slide relative to each other to reduce the first through hole 511, so that the lead wire 2 of the coil 1 can be pressed tightly to ensure the stability of the coil lead wire during welding.

[0042] A wireless charger comprises the coil lead connection structure as described in any one of the above embodiments.

[0043] The utility model discloses a coil lead connection structure and a working principle and process of a wireless charger. The lead 2 of the coil 1 is passed through a limiting portion 51 and a main body 52, and the limiting portion 51 is pressed so that the lead 2 is crimped onto a connecting terminal 5. Then, the connecting terminal 5 is inserted into a soldering pad hole 4 of a PCBA 3. A second locking piece 7 passes through the P soldering pad hole 4 to realize the clamping of the connecting terminal 5 and the PCBA 3. The first locking piece 6 can ensure that the insertion depth of the connecting terminal 5 is uniform, and then the lead 2 is welded to the PCBA 3.

[0044] During the insertion process of the connecting terminal 5, the connecting end 71 of the second fixing piece 7 first passes through the soldering pad hole 4 smoothly, and then the second fixing piece 7 is squeezed, so that the free end 72 of the second fixing piece 7 can move toward the main body 52 with the connecting end 71 as the axis until the second fixing piece 7 is completely embedded in the groove 523. After the free end 72 passes through the soldering pad hole 4, the free end 72 moves and resets with the connecting end 71 as the axis under the action of elasticity in the direction away from the main body 52, so that the second fixing piece 7 can be connected with the PCBA3.

[0045] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A coil lead connection structure, characterized in that: It includes a coil, a PCBA and a connecting terminal, the coil is connected to a lead, the lead is pressed on the connecting terminal, a soldering pad hole is provided on the PCBA, the connecting terminal is used to be clamped with the soldering pad hole, and a first clamping piece and a second clamping piece are provided on the connecting terminal, the first clamping piece can abut against the PCBA, and the second clamping piece can pass through the soldering pad hole and be clamped with the PCBA.

2. The coil lead connection structure according to claim 1, characterized in that: The connecting terminal comprises a main body and a limiting portion, a notch is formed between the limiting portion and the main body, and a first through hole and a second through hole are respectively formed on the limiting portion and the main body.

3. The coil lead connection structure according to claim 2, characterized in that: The cross sections of the main body and the limiting portion are in annular shape.

4. The coil lead connection structure according to claim 2, characterized in that: One end of the limiting portion is formed into a movable structure, and the limiting portion includes a first connecting ring and a second connecting ring which are slidably connected, and an outer wall of the first connecting ring is in contact with an inner wall of the second connecting ring.

5. The coil lead connection structure according to claim 2, characterized in that: The main body is provided with a connecting piece, and the connecting piece is connected to the limiting part.

6. The coil lead connection structure according to claim 2, characterized in that: The other end of the main body away from the limiting part is a tail end, and the main body is provided with a plurality of grooves near the tail end. The second locking piece is elastically connected to the grooves, and the second locking piece forms an angle with the main body.

7. The coil lead connection structure according to claim 6, characterized in that: The second locking piece includes a connecting end and a free end, the connecting end is elastically connected to one end of the groove, the connecting end is close to the tail end, and the free end can move back and forth with the connecting end as the axis.

8. The coil lead connection structure according to claim 2, characterized in that: One end of the first locking piece connected to the limiting portion is arc-shaped.

9. The coil lead connection structure according to claim 2, characterized in that: The pad hole has a circular cross section, and the main body can pass through the pad hole.

10. A wireless charger, characterized in that: It comprises the coil lead connection structure as described in any one of claims 1 to 8.

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